A scan of the X piezo vs. Y piezo, for fine,
high-resolution scans of sample areas smaller than 100
microns.
Stepper
A scan of the X vs. Y stepper motor for
coarse scans with a large field of view.
Detector
A scan of X vs. Y detector, for detector
alignment or diagnostics. Not for general users. This option
might be password-protected. If you don't know the password,
and nobody wants to tell it to you, we probably don't want you
to do this kind of scan because you can easily crash the
detector stage into somewhere.
Point Spectrum
A 1-dimensional scan of the
monochromator, where the sample stays fixed in X and Y. The
sample will be tracked in Z though to stay in focus - make
sure you recorded the sample in X-ray focus!
Horizontal (Vertical) Focus
A scan of X (Y) piezo vs.
Z stage (usually over a sharp edge) to determine the x-ray
focus.
Horizontal (Vertical) Contrast
A scan of X (Y) piezo
vs. energy (monochromator) to see which energy gives the
strongest contrast.
Custom
In this case, you can determine the two scan
devices yourself. This option can also be password-protected,
see above. You have to know what you are doing before you
start a custom scan!
Not all scan devices are allowed on the fast axis.
